In this worksheet, we will practice describing the atomic coordinates, packing densities, and hole geometries in cubic lattices.
What is the coordination number of a cobalt atom in the hexagonal close-packed structure of cobalt metal?
What is the coordination number of a chromium atom in the body-centred cubic structure of chromium metal?
A unit cell contains equivalent atoms at , , , , , , , and . Which letter denotes the type of centering displayed by this unit cell?
The compound contains a metal ion with an ionic radius 49% smaller than that of the anion . Determine which of the following statements is false, given that the metal ions
have the coordinates:
- AThe lattice adopts the cubic structure with the highest packing efficiency.
- BThere are four ions within the unit cell.
- CThe metal ions are hexacoordinate.
- DThe lattice has a body-centered structure.